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2121X2121XX12221
11X1X222X211X221
21X1X11212211221
11X11XX211211221
11X122122121X221
11212XX2XX11X221
11X11X12X2X12221
211112X2X221X221
X111XX122XX1X221
X1X122X21XX11221
111112121X111221
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X1212X1211X11221
1121X1121XX11221
21212X2222212221
X12111X212112221
211121221111X221
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X121X2X22X211221
21211XX2X1112221
2111XX22XXX11221
211121X2X1212221
